A precise measurement of the ratio of hadron to muon production in ee collisions, denoted by R(s), is a necessary input for the interpretation of current precision electroweak measurements. We describe a method for measuring R(s) with the BABAR detector at the PEP-II B-factory using initial-state radiation events.

Hadron colliders have played, and will continue to play, a crucial role in the understanding of CP violation. Their impact is expected to be especially important in the study of CP asymmetries in rare decays and the Bs meson. The experimental challenge and reach of current and future experiments is discussed.

Hadron spectroscopy on dynamical configurations are faced with the difficulties of dealing with the mixing of single particle states and multi-hadron states (for large spatial volumes and light dynamical quarks masses). It is conceivable that explicit multi-hadron interpolating operators will be necessary for obtaining sufficiently good overlap on to multi-hadron states in order to extract the ...

Universality says that the mechanisms of hadron production are the same in all high-energy processes in which most of the final state hadrons arise from hard or semi-hard scattering of partons. Differences in the detailed composition of the final states are assumed to be due to differences in the flavours and configurations of the initial partons. Perturbative quantum chromodynamics (pQCD) has ...

The large hadron collider is CERN’s next particle accelerator project, scheduled for commissioning in 2005. The project requires accurate current measurements above 10 kA. Calibration heads have been developed in collaboration with industry to work up to 24 kA with a relative measurement uncertainty of 10 . This paper describes the design and verification of these heads.

Abstract. Hadron structure from high-Q2 γ∗ p scattering processes is often expressed in terms of hadronic matrix elements of nonlocal operators. Properly defining and interpreting these quantities is very important in light of experiments aiming to extract transverse momentum dependent parton distributions or generalized parton distributions. The current status will be reviewed, including recen...